NSM: Add dprintk() calls in nsm_find and nsm_release

Introduce some dprintk() calls in fs/lockd/mon.c that are enabled by
the NLMDBG_MONITOR flag.  These report when we find, create, and
release nsm_handles.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 8e68e799293c..38255455563d 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -249,10 +249,15 @@ retry:
                 atomic_inc(&pos->sm_count);
                 kfree(nsm);
                 nsm = pos;
+                dprintk("lockd: found nsm_handle for %s (%s), cnt %d\n",
+                                pos->sm_name, pos->sm_addrbuf,
+                                atomic_read(&pos->sm_count));
                 goto found;
         }
         if (nsm) {
                 list_add(&nsm->sm_link, &nsm_handles);
+                dprintk("lockd: created nsm_handle for %s (%s)\n",
+                                nsm->sm_name, nsm->sm_addrbuf);
                 goto found;
         }
         spin_unlock(&nsm_lock);
@@ -291,6 +296,8 @@ void nsm_release(struct nsm_handle *nsm)
         if (atomic_dec_and_lock(&nsm->sm_count, &nsm_lock)) {
                 list_del(&nsm->sm_link);
                 spin_unlock(&nsm_lock);
+                dprintk("lockd: destroyed nsm_handle for %s (%s)\n",
+                                nsm->sm_name, nsm->sm_addrbuf);
                 kfree(nsm);
         }
 }